# -*- coding: utf-8 -*-
"""
Created on Wed Jul 17 17:53:31 2019

@author: jingzl
"""


# 中国大学排名定向爬虫
import requests
from bs4 import BeautifulSoup
import bs4

def getHTMLText(url):
    try:
        r = requests.get( url, timeout=30 )
        r.raise_for_status()
        r.encoding = r.apparent_encoding
        return r.text
    except:
        return ""

def fillUnivList( ulist, html ):
    soup = BeautifulSoup( html, "html.parser" )
    for tr in soup.find( 'tbody' ).children:
        if isinstance( tr, bs4.element.Tag ):
          tds = tr('td')
          ulist.append([tds[0].string, tds[1].string, tds[3].string])

def printUnivList( ulist, num ):
    tplt = "{0:^10}\t{1:{3}^10}\t{2:^10}"
    ## chr(12288)中文空格对齐处理
    print( tplt.format("排名","学校名称","总分", chr(12288)) ) 
    for i in range(num):
        u = ulist[i]
        print( tplt.format(u[0],u[1],u[2],chr(12288)))

def main():
    uinfo = []
    url = "http://www.zuihaodaxue.com/zuihaodaxuepaiming2019.html"
    html = getHTMLText( url )
    fillUnivList( uinfo, html )
    printUnivList( uinfo, 20 )  # 20 univs
    
main()

    









